Source: https://www.washingtonpost.com/politics/cambridge-analytica-harnessed-facebook-data-in-work-for-super-pac-led-by-john-bolton-according-to-former-employees/2018/03/23/d756967a-2ea3-11e8-8ad6-fbc50284fce8_story.html?utm_term=.73af0f429eca